#[test]
fn char_encode_utf8() {
    let mut b = [0; 2];
    println!("b-value =  {:?}", result);

    let result = 'ß'.encode_utf8(&mut b);

    println!("b-value =  {:?}", result);

    assert_eq!(result, "ß");

    assert_eq!(result.len(), 2);
}